Cylinder-head remover



'F. E. MILLER.

CYLINDER HEAD REMOVER.

APPLICATION FILED SEPLS, I9I8.

1,390,960. Plltdsept- 13, 1921.

IIIIIIIIII F'. E Mllar' UNITED STATES FRANK E. MILLER, 0F DURAND,MICHIGAN.

. CYLINDER-HEAD REMOVER.

Specification of Letters Patent. l Patented Sept.,13, 1921.

Application led September 1918. Serial No. 252,436.

To all 'whom it may concern: '.Be it known that I, FRANK E. MILLER, acltizen of the United States,and a resident of Durand, in the county ofShiawassee and State of Michigan, have invented certain new and usefulImprovements ina Cylinder-Head Remover, of which the following is aspecification. d

This invention relates to a tool particularly designed for facilitatingthe removal of cylinder heads from internal combustion engines, and anobject of the invention is to provide a tool of this nature which willfacilitate and permit the removal of a cylinder head without in any waymutilating the gasket between the cylinder block and the cylinder head.

In the operation of cleaning the carbon from internal combustionengines, it is necessary to remove the cylinder head, and heretoforesuch removal has been performed by prying the Icylinder head upwardlyfrom the cylinder block by the use of a screwdriver, chisel or othersimilar wedge-shaped tool which is inserted between the head, and thecylinder block against the cylinder head gasket, consequently resultingin mutilation of the cylinder head gasket. The mutilation of the gasketeither requires the provision of a new gasket, which is not alwaysconveniently accessible, or results in inefficient operation of theengine through the leakage of oil, or compressed gas through mutilationformed in the gasket, and it is an object of this invention to provide atool which is connected to the cylinder cap, at

i the opening' which normally carries the spark plug, at one endof whichtool engages one of the valve heads of the engine so that upon operationof the tool, the cylinder head will be removed from the cylinder blockwithout mutilation of the gasket.

Specifically, this inventionv comprehends the provision of atool asspecified, comprising a s hank` externally screw-threaded throughout themajor portion of its length and provided with a transverse opening nearone end through which an operating bar extends and also to provide apair of nuts which are threaded upon the shank of -the tool and haveexternal screw-threaded portions adapted to lit within the internalthreaded opening which normally receives the spark plugs of an internalcombustion engine, the threads upon one nut being pro vvided to fit thestan ard threads employed for connecting one type of spark plugs toengines, while the external threads upon the other nut are provided tofit a different type of standard thread for spark plugs.

Other objects of the invention will appear in the following detaileddescription taken in connection with the accompanying drawing forming apart of this specification, and in which drawing:

Figure 1 is a fragmentary section through an internal combustion engineyillustrating the improved tool connected-thereto.

Fig. 2 is a longitudinal section through the tool.

Fig. 3 is a top plan of the improved tool.

Referring more particularly to the drawing, A indicates a fragment ofthe cylinder block of any oridnary type of internal combustion enginewhich has the cylinder head B thereof removably connected to the block.The cylinder head gasket, which is lpositioned between the facingsurfaces of the cylinder block A and the cylinder head B, to provide aiuid tight joint, is indicated by the letter C and it is to preventmutilation of this gasket, during the removal of the head B from thecylinder block, that the improved tool generically indicated by thenumeral 1 is provided.

The tool 1, comprises Aa relatively long shank 2 which is externallyscrew-threaded throughout its major portion and has a head 3 formed uponone end of the same. The head 3 is provided with a transverselyextending openin 4, extending centrally through the .hea 3 of the shank2 and which opening removably receives a handle rod 5. The handle rod 5is provided to facilitate the rotation of the shank 2 during the use ofthe tool.

A nut 6 is adjustably mounted upon the threaded portion of the shank 2,and it -is provided with a wrenchface 7 and an externally threaded shank8 the threads of which shank are cut to fit one of the standard d nallythreaded portions of the nuts 6 and 9,

greater number of engines now commonly in use.

In the operation, of the improved tool, the spark plug (not shown) isremoved from the opening 14 in the cylinder head B and the threadedshank of either of the nuts 6 or 9 is threaded in this opening, securelyconnect ing the nut to the cylinder head B. The shank 2 is then rotated,and since the nut is rigidly connected to the cylinder head, rotation ofthe shank will move the same longitudinally through the nut and thelower end of the shank will engage the head 15 of one of the valves ofthe engines after which further rotation of the shankwill force thecylinder head B upwardly, as indicated in Fig. l of the drawing, movingthis cylinder head above the cylinder block A suflicient distance topermit the insertion of the fingers beneath the same for furthervremoving. the cylinder head B. The removal of the cylinder head B, bythe improved tool, will not yin any Way mutilate the gasket D in that nopart of the tool engaged the gasket during the removal of the cylinderhead B.

Having thus fully described the invention, what is claimed is:

l. The combination with an engine cylin der Aand a. removable headtherefor, of a tool for facilitating the removal of the head from thecylinder comprising means for connecting the tool to the head, andadjustable means for forcing the head from the cylinder upon adjustmentthereof.

2. The combination with an engine structure including a cylinder andremovable head therefor, of a tool for facilitating the removal of thehead from the cylinder comprising means for connecting the tool to thehead, and adjustable means adapted to engage a portion of the cylinderstructure for forcing the head from the cylinder upon adjustmentthereof.

3. The combination with an engine structure including a cylinder andremoviable head therefor provided with a spark plug receiving opening,of a tool for facilitating the removal of the head from the cylindercomprising means engageable in said opening to rigidly connect the toolto thel head, and adjustable means for forcing the head from thecylinder upon adjustment thereof.

ktatin cy-lin er comprising a nut having an ex# ternal threaded portionfor engage-ment iny 4.' The combination with an engine structureincluding a cylinder and a removable head therefor provided with a sparkplug receiving opening, of a tool for facilitating the removal of thehead from the cylinder comprising a threaded shank, a nut mounted uponsaid shank and provided with an ex*- terior threaded portion engageablein said opening to rigidly connect the nut to said head, said shankadjustable through said nut and adapted to engage a portion of theengine structure to force the head from the cylinder.

5. The combination with an engine structure including a cylinder, aremovable cylinder head, land a gasket between the cylinder and' head,of a tool for facilitating the removal of the head from the cylindercomprising' means for rigid attachment to said head, 'adjustable meanscarried by said first named means for engagement with the cylinderremote from said. gasket for forcing said head from the cylinder.

6. The combination with an' engine structure including a, cylinder, aremovable cylinder head having a spark lug receiving opening therein,and a gas ret between the cylinder and head, of a tool for facilithe`removal of the head from the said opening, a shank adjustably carriedby said nut'and adapted for engagement with the cylinder remote fromsaid gasket for forcing said head from the cylinder.

7. A tool for removing cylinder heads from cylinders comprising incombination, a threaded shank provided with a head at one end thereof,and a nut in threaded engagement on said shank, said nut provided withexternal screw threads and a wrench receiving formation at its endportion nearest the head of said shank.

8. An internal combustion engine having, in combination, a cylinder, aremovable head therefor provided with a screw-threaded orifice, a valvein alinement with said screw-threaded orice and a screw engaging saidscrew-threaded orifice and adapted to engage at its inner end said valvewhereby said valve may be pressed and held' firmly against its seat andsaid head forced oli' of said cylinder.

FRANK n. MILLER.

